We'll list flatfee MLS companies available for Tucson home sellers and detail their services and costs. An Arizona residential purchase agreement is a legal document outlining the terms and conditions for a buyer's purchase of residential property from a seller.Forms are state specific because real estate laws vary significantly from state to state. Please fill out my quick real estate sellers request form and tell me about your property. The seller can complete the forms, including purchase price, closing date, and any other relevant terms. All forms are fillable. You can fill it out in Reader and print it from there. Find the required and recommended documents for selling your home without a realtor in Arizona, plus where to get paperwork help.